A Flask app factory template

app.py

from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_admin import Admin
from flask_security import Security, SQLAlchemyUserDatastore
from config import Config
from app.views import MyModelView

db = SQLAlchemy()
admin = Admin()


def create_app():
    app = Flask(__name__)
    app.config.from_object(Config)
    with app.app_context():
        db.init_app(app)

        from app.models import User, Role
        from . import models

        # Setup Flask-Security
        user_datastore = SQLAlchemyUserDatastore(db, User, Role)
        security = Security(app, user_datastore)

        # Create admin
        admin.init_app(app)

        # Add model views
        admin.add_view(MyModelView(Role, db.session))
        admin.add_view(MyModelView(User, db.session))

        return app


if __name__ == "__main__":
    app = create_app()
    app.run()